It seems they have opted to prefer browser miners and botnets over centralization caused by dedicated hardware (ASICs).
Profitibility in the traditional sense factors in electricity, but when you're using someone else's electricity, that's not a consideration. If you have enough users, the return is quite reasonable for the site owner.
https://getmonero.org/2018/02/11/PoW-change-and-key-reuse.ht...
It seems they have opted to prefer browser miners and botnets over centralization caused by dedicated hardware (ASICs).
Profitibility in the traditional sense factors in electricity, but when you're using someone else's electricity, that's not a consideration. If you have enough users, the return is quite reasonable for the site owner.